I know some methods to reset bios password.
1. The best and easiest method: Close OS and shut down the electricity power of computer. Open your computer box, take out the cmos battery from the mainboard. Then the bios password will be reset to blank. Put it back after a few minutes.
2. Follow some tutorials. For example the tutorials: Reset HP / Dell BIOS Password. Top 3 methods to crack bios password!
3. Use the bios password recovery tool
, but that is not free!
So I would suggest you the 1st method. Hope it helps.